In rotary wing flight from a ship, 3 things happen in quick sequence. At 10-20 knots, you will get translational lift - basically a reduction in induced flow - which reduces power required (you will also get less turbulent air into the tail rotor improving efficiency and reducing power further). However as you move from HIGE (hover in ground effect - basically skid height) to HOGE (hover out ground effect - generally 1.25 rotor diameter), power required increases substantially. The trick is to accelerate to approximately 70 knots (minimum power required aka bucket airspeed) as soon as possible. If you are at the very limits of power, you may see an American helicopter turn right (reduced power on tail rotor), a European helicopter turn left (same thing but their rotors turn in the opposite direction) and a tandem rotor (Boeing) kick the tail 15 deg out to the left so the advancing blade on the aft rotor system gets clean air. Short story - a little airspeed makes a big difference. How much of this applies to the V-22, of that I am not sure.